Bolt-pointing machine.



No. 69|,|98. Patented Jan. 14, |902.

J. STEPHANS. BULT POINTING MACHINE.

(Application led May 9, 1900.)

3 Sheets-Sheet (No Model.)

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No. 694,198. Patented Ia-n. I4, |902.

J. STEPHANS. BOLT PUINTING MACHINE.

(Apphcetion filed Mey 9, 19oo.\

3 Sheets Sheet 2.

(No Model.)

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No. 69l,|98.

Patented 1an. i4, |902. .1. sTEPHANs.

BOLT POINTING MACHINE.

(Application led May 9, 1900.)

3 Sheets-$heet 3.

(No Model.)

. IN'SZINZ'DR MM@ Nrin rares JACOB1 STEPI'IANS, OF PAVVTUOKET, RHODE ISLAND.

BOLT-POINTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 691,198, dated January 14, 1902.

Application filed May 9, 1900. Serial No. 16,014. (No model.)

To a/ZZ whom t may concern:

Be it known that I, JACOB STEPHANs, a citizen of the United States, residing at Pawtucket, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in Bolt-Pointing Machines, of which the following is a specification.

The invention has reference to an improvement in machines for shaping the ends of screw-bolts; and it consists in the peculiar construction and combination of parts whereby two bolts may be simultaneously or successively operated upon, as will be more fully set forth hereinafter.

The object of the invention is to increase the output and reduce the cost of attendance in the use of the machine.

Figure l is a side View of the bolt-pointing machine. Fig. 2 is a front View of the same. Fig. 3 is a Vertical sectional View taken on the line of one of the two spindles and the carriages. Fig. et is a vertical sectional View on a line through the center of the machine. Fig. 5 is a front View of the fork-support, and Fig. G is a perspective View of the holder for the head of the bolt.

In the drawings, a indicates the standard, consisting of a box-like casting forming the support of the parts of the machine and having the extended base a. From the standard ct extend in the front of the machine the beds d2 a2, strengthened by the brackets a3 a. A trough a extends on the two sides and across the front and is preferably cast in one piece with the base and the beds a2 d2. The said trough a4 serves to support a supply of boltblanks within the easy reach of the operator. The bases a5 a5 are supported on the beds a2. Each base is provided at opposite sides with the grooved ways a5, in which the carriages b b slide. On each of the carriages ba standard b is secured, in which the longitudinallyadjustable spindle b2 is supported. The head b3 of the spindle b2 is provided with a recess, in which t-he stud b4 of the work-holder b5 is secured by a set-screw, as shown in Fig. 3. The work-holder is formed to support the work and hold it against rotation.

In the drawings the work-holder is shown adapted to support the hexagonal head of a screw-bolt blank and hold the same against spindles.

rotation. For other forms of heads or work especially-constructed work-holders are used.

The standard a preferably extends upward to form the two transversely-extendin g pillowblocks a7 a7 in one casting, and in these pillow-blocks of d'7 the bearings for the two spindles o c are placed and secured by 'the caps a8 as. The brackets a9 extend from the front pillow-block below each spindle and form the support of the adjustable fork-support d10 for the bolt. The sleeve all is secu red to the standard and forms the journal-bearing for the central drivin g-shaf t d. The two brackets @L12 am extend from the pillow-blocks a7 aT upward to form the bearing for the idle pulley c2.

The machine is driven by means of a belt from some prime motor, as is indicated in Fig. 2. The belt (indicated in broken lines) extends around the pulley c, secured to the right-hand spindle c, thence over the idle pulley c2, and from this around the pulley o3, secured to the left-hand spindle c. B1 y widening the machine, so as to take in three or more carriages b and spindles c, the addition of one or more idle pulleys will permit the belt to simultaneously operate three or more Each of the spindles c is provided at the front end with a shaper (96 of such form as will out and finish the end of' the bolt into the desired form. In Fig. 3 a'shaper is shown for forming a semispherical end on the bolt. 127, in which also a perforated center-block bs is secured, by which the bolt is held centrally Land supported near the shaper, as shown in Fig. 3.

To the rear end of one of the spindles c the pulley c4 is secured, and this pulley is connected by means of a belt with the pulley c5, secured to a shaft journaled in bearings formed in the standard d, on the inner end of which shaft the pinion c6 is secured and engages with the gear c7, secured to the central shaft d. The shaft d has suitable bearings in the standard a and a bearing in the conical sleeve au. Through the shaft d motion is transmitted to a transversely-extended shaft,by which the carriages b are operated. This transmission of motion to the carriages b, by which the bolts are fed to the shapers, may be continuous; but in the preferred form The shaper 196 is secured in the head IOC I provide the shaft d with the clutch d', loose` Y on the shaft, and the sliding clutch part d2, connected by a groove and V'feather with the shaft, and connect the hand-lever d3, which is pivoted at its lower end in the usual manner, with the' sliding part d2 of the clutch, so that the power-transmitting part of the mechanism operating the carriages may be connected or disconnected at will by the operacarriages are used in/one machin-e, the cams maybe set so as to feed the boltssuccessively or in pairs. The cam CF acts on the rol-ler d8, journaled in a bracket on the carriage b, to move the boltf to the shaper, and when the highest point of the cam d? has passed the roller d8 the weight dg, secured to one end of the strap d10, the other end ot whichis secured to the sliding carriage b, said strap d10 extending over the pulleys d and (i12, draws the carriage b backward, when the pointed bolt is removed and a new bolt-blank inserted to be turned at the next forward movement of thecarriage.

In machines of this construction one attendant may conveniently supply the blank for a two or even a four spindle machine. The labor charge can thereby be reduced to one-half or one-fourth, while the cost of a twoor four spindle machine, producing two or four times the number of bolts, is not, proportionally increased.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. In a bolt-pointing mach-ine, a standard having a plurality of Shaper-carrying spin# dles arranged thereon and longitudinally thereof, a shelf or table secured to one side of the standard and longitudinally thereof, a plurality of work-feeding devices arrangedV on the table, a pulley on each spindle-shaft, a single belt running on all the pulleys to rotate them, a single shaft arranged longitudinally of the shelf and operating the work.- feeding devices, and operating mechanism connecting the shaft and one of the spindles, substantially as described.

2. In a bolt-pointing machine, a standard having a shelf or table arranged at onel side andlongitudinally thereof, a series.r of workfeeding devices arranged upon and longitudinally of the shelf, a shaft arranged longitudinally of the. shelf and provided with a series of cams, said cams adapted to operate the work-feeding devices, a second and driving shaft mounted on the standard at right angles to the cam-shaft, and means including a clutch for connecting the driving-shaft with y ed to receive the piece of work laterally so that it may be lowered therein into position for the tool to act upon it, and an independent support located between said parts for supporting the work from beneath, substantially as and for the purpose set forth.

4. In a bolt-pointing machine, a hollow, cast-metal standard having two pillow-blocks 'forming the support of two or more spindles,

forwardly-projecting beds forming the Supports for the blank-feeding devices, a trough extending along the two sides and the front of the forwardly-proj ecting beds, ways on the beds parallel to the spindles, reciprocating carriages on the ways, adjustable blank-sulpports on the carriages, means for rotating the spindles, a shaft extending longitudinally parallel with the spindles, mechanism connecti-ng one of the spindles with the longitudinal shaft, a transversely-extending shaft, and cams on the transverse shaft for actuating the carriages, whereby the blanks are automatically fed to the cutter and withdrawn, as described.

5. In a bolt-pointingmachine, in com-hination with two or more spindles, mechanism for rotating the spindles, and two or more work-supportingcarriages sliding in ways parallel to the axis of the spindles, of a shaft supported in bearings parallel to the axis of the spindles, a clutch on the shaft, anv operating-lever connected with the sliding part of the clutch, a bevel-gear on the clutch, a

i transverse shaft provided with a bevel-gear engaging with the bevel-gear on the clutch,

cams on the transverse shaft for moving the carriages toward the spindles, and weights connected with straps to the carriages for moving the carriages back from lthe spindles, as described.

6. In a bolt-pointing machine, the combi- `nation with the spindles c c, placed side by 1 side, the cutter-heads b7 011 the spindles, the

Shaper 56, and the perforated block bs in the head,ofthe carriages b b, the standard b on the carriages, the spindle b2, the head b3 on the spindle, the holder b5 open on, one side formed' to receive the head of the bolt and hold it against rotation, a stud on the holder detachably secured in the head b3, mechanism for rotating the-spindles, and mechanism for reciprocating the carriages, as described.

In testimony whereof I have signed my name toy this specification in the presencey of two subscribing witnesses.

JACOB STEPHANS.

Witnesses:

A. E. HAGERTY, J. A. MILLER, Jr.

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